Airplane



LOUIS G. C' ST' 1 930' 'ch 4l Mal' AIRPMNE 1928 led 06"' 9.' pi

ummm, if M1 lll llll

INVENTOLRLS L0 as G6530 m Y .NE

. OR ATT August 2nd,1916; so as to l Patented' Mar. I4i, 1,930

encuen c. srl Louis, or Fanano, cALIronnn AIRPLANE Application led October 9, 1928. JSerial I0. 811,890.

This invention relates to airplanes and particularly to the wing structure my prmc1pal object being to construct a wlng so that 1t incorporates the advantages of surfacelrft- 6 ing wings as shown in my Patent No.

1685,888, dated October 2, 1928, and filed June 18, 1927, under Serial No. 199,817, to-

gether with the air compression lifting features shown in my Patent No. 1,195,290, dated rovide a more eicient structure than was ad with either of the above mentioned devices alone.

A further object of the invention is to produe a simple and inexpensive device and yet one which will be' exceedingly effective for the ose for which it is deslgned.

- ese objects I- accomplish by means of such structure and relative arrangement of .2 gal-ts as will fully appear by a perusal of the ollowing specification and claims.

The figure on the drawing is a fanclful pery ective view of' my improved airplane in ht. eferring now more particularly to the characters of reference on the drawing, the

airplane is preferably of the form shown in the first mentioned patent and comprises r essentially a fuselage 1 having longitudinally A spaced w1n elements'2 and 3 of suitable construction t e front wing 2 being hingedly supported b vertical struts 4 at its forward en ,while t e wing 3 is similarlrsupported by vertical struts 5 at its rear en rI he rear 3 end of the front wing and the'front end of 5 the rear wing are connected by opposed andv vertically movable rods 6, connected together in common attheir lower ends to a control mechanismas shown in said first named pre` vious patent, and which enables the angle of setting of both wings to be altered simultaneously and in opposite directions. This particular structure however formsno part of the present invention and the wings may be rigidly attached to the fuselage inthe usual manner if desired. Y v i Rigidly secured to and depending .from

the under surface of each wing are longii tudinall extending air' deflecting plates 7.

These p ates are'triangular in form, extendiiected laterally and compresse ing from the front to the rear edge of the wing and they slope downwardly and rearwardly from their apex at thel forward edge of the wing.

These plates are arranged in cooperating pairs, those of each pair d1ver ing from each other from front to rear an meeting each other at the forward edge of the wing as plainly shown. By reason of this arrangement all the air as passing under the wing etween the coo erating pairs of plates w1l1 be gradually euntil by the time the air reaches the rear edge of the wing 1t is compressed to such an extent-that it is ca able of exerting a much greater lifting Ie ect on the wing than is the case with a plain surfaced win alone. It is therefore possible to make t e wings much smaller than is ordinarily the case, while still having the same or even .greater lifting'eect. The trian lar form of deflecting plates ermits the a1r pressure to be built up gradua y, promoting easy and steady lifting into the air and not interfering with the steering or bankin of the plane.

rom the foregIoing description it will be readily seen that have reduced such a device as substantially ful' s the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do notrform a departure from the spirit of the invention, as dened by the appended claims.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is: 9o

1. I [n an airplane, a wing, and air compressing plates secured to and depending from the under surface of the wing in planes at right angles thereto, and arranged in pairs; the plates of each pair diverging from each other Oto 'the rear edge of the wing, and meeting each other at the front edge of the wing.

2. In an airplane, a wing, and air compress- .ing plates secured to'and depending from the under surface of the wing in planes at right angles thereto, said plate` bein of triangular form and diverging from eac other to the rear edge of the wing, and their lower edges sloping downward rom the front edge of the wing tothe rear edge thereof. v

In testimony whereof I ax my signature.

GEORGE C. ST. L'OUIS. 

